Structure 12482 · Wayne County, MI

Picnic Way over Canoe Stream

Carries Picnic Way over Canoe Stream, Belle Isle.

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure8/9 · Very Good
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT30 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 8/9Substructure 7/9

30 ft end to end. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a box-beam bridge.

Built1901rebuilt 1990
Length29.9 ft9.1 m
Daily traffic935counted 2003
Last inspectedAugust 2024every 24 months

Location

StateMichigan
CountyWayne
LocationBelle Isle
CarriesPicnic Way
CrossesCanoe Stream
Coordinates42.33476, -82.98696

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length29.9 ft (9.1 m)
Max Span29.9 ft (9.1 m)
Deck Width38.7 ft (11.8 m)
Deck Area107.4 sq m
Main Spans1
Year Built1901 (reconstructed 1990)

Traffic

Avg Daily Traffic935 (2003)
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000012482

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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